Orientation dependence of the mechanical behaviour of (CoCrFeNi)94Ti2Al4 high-entropy alloy single crystals with γ′-phase particles
| Autor: | A.V. Vyrodova, Y.I. Chumlyakov, Irina Kireeva, A. A. Saraeva |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Mechanical Engineering Alloy высокоэнтропийные сплавы осадочное твердение Slip (materials science) engineering.material Condensed Matter Physics монокристаллы Shear (sheet metal) Precipitation hardening Brittleness Mechanics of Materials Phase (matter) engineering Fracture (geology) General Materials Science Deformation (engineering) Composite material механическое поведение |
| Zdroj: | Materials letters. 2021. Vol. 305. P. 130746 (1-4) |
| Popis: | The kinetics of precipitation hardening at 1073 K of the (CoCrFeNi)94Ti2Al4 high-entropy alloy (HEA) was investigated during tension along [0 0 1] and [ 1 ¯ 44 ] orientations. It was shown that at a high level of deforming stresses, the critical resolved shear stresses (CRSS) τcr began to depend on the crystal orientation: τcr [ 1 ¯ 44 ] [ 1 ¯ 44 ] -oriented crystals was developed after strain of 5%, and the fracture contained elements of brittle and ductile fracture. In [0 0 1]-oriented crystals, deformation occurred by slip, and fracture was ductile. |
| Databáze: | OpenAIRE |
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